Would you be upset?

Emily
My husband and I came down to stay with my Mom for the weekend since we had a childbirth class this morning and I also have my Baby shower tomorrow in my hometown where my mom lives. My mother in law lives 45 minutes away and asked if she could ride with us to the shower and my husband let her know we were staying with my mom for the weekend so we were already here. My mother in law is now saying she doesn't know if she will come or not now. She doesn't like driving. My husbands aunt and grandma are coming to the shower from the same town and my mother in law refuses to ride down with them. Would you guys be upset if your mother in law didn't show up to her first grandbaby's shower?